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Finding the Fourth Proportional to 304,951.66, 421,043.34 and 233,206.72

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Solution

The fourth proportional to 304,951.66, 421,043.34 and 233,206.72 is: 321,985.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,951.66 : 421,043.34 = 233,206.72 : x
  2. Step 2: Convert to fraction form
    304,951.66/421,043.34 = 233,206.72/x
  3. Step 3: Cross multiply
    304,951.66x = 421,043.34 × 233,206.72
  4. Step 4: Simplify right side
    304,951.66x = 98,190,136,299.24
  5. Step 5: Solve for x
    x = 98,190,136,299.24/304,951.66
  6. Step 6: Final answer
    x = 321,985.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.